\begin{tikzpicture}
    \tkzDefPoints{0/0/B, 3.5/0/C, 2.8/2/A}
    \tkzDefMidPoint(B,C)  \tkzGetPoint{D}
    \tkzDefMidPoint(A,C)  \tkzGetPoint{E}
    \tkzDefMidPoint(A,B)  \tkzGetPoint{F}

    \tkzDrawPolygon(A,B,C)
    \tkzDrawSegments(A,D  B,E  C,F)
    \tkzMarkSegments[mark=|](B,D  D,C)
    \tkzMarkSegments[mark=||](A,E  E,C)
    \tkzMarkSegments[mark=|||](A,F  F,B)
    \tkzLabelPoints[above](A)
    \tkzLabelPoints[left](B,F)
    \tkzLabelPoints[right](C,E)
    \tkzLabelPoints[below](D)
\end{tikzpicture}

